Depigmenting composition

- Caster

The invention relates to a cosmetic or dermatological composition comprising, in a physiologically acceptable medium, a compound of general formula (I) in which the groups R and R' represent, independently of each other, a C.sub.1-6 alkyl group or a hydrogen atom, or a physiologically acceptable salt of such a compound, this composition being used for depigmenting the skin

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Claims

1. Cosmetic or dermatological composition, characterized in that it comprises, in a physiologically acceptable medium, a compound of general formula (I) ##STR2## in which the groups R and R' represent, independently of each other, a C.sub.1-6 alkyl group or a hydrogen atom, or a physiologically acceptable salt of such a compound.

2. Composition according to claim 1, characterized in that the two radicals R and R' represent an alkyl group.

3. Composition according to claim 2, characterized in that the two radicals R and R' represent an ethyl group.

4. Composition according to claim 1 characterized in that it is in the form of a milk, a cream or a gel.

5. Composition according to claim 1, characterized in that it contains the compound of formula (I) in vectorized form in liposome.

6. Composition according to claim 1, characterized in that it contains the compound of formula (I) in a proportion of from 0.1 to 5% by weight.

7. Composition according to claim 1, characterized in that the physiologically acceptable medium comprises water and can optionally comprise other cosmetic or dermatological adjuvants.

8. Process for lightning the skin or for the cosmetic treatment of skin marks, characterized in that a composition according to claim 1 is applied to the skin.

9. Composition according to claim 1, characterized in that it contains the compound of formula (I) in a proportion of from 0.25 to 3% by weight.

10. A method of preparation for a dermatological formulation, comprising: preparing a composition comprising, in a physiologically acceptable medium, a compound of general formula (I) ##STR3## in which the groups R and R' represent, independently of each other, a C.sub.1-6 alkyl group or a hydrogen atom, or a physiologically acceptable salt of such a compound.

11. The method according to claim 10 wherein R and R' represent an ethyl group.

12. The method according to claim 10 wherein the composition is in the form of a milk, a cream or a gel.

13. The method according to claim 10 wherein the composition contains the compound of formula (I) in vectorized form in liposomes.

14. The method according to claim 10 wherein the composition contains the compound of formula (I) in a proportion of from 0.1 to 5% by weight.

15. The method according to claim 10 wherein the composition contains the compound of formula (I) in a proportion of 0.25 to 3% by weight.

16. The method according to claim 10 wherein the physiologically acceptable medium comprises water and can optionally comprise other cosmetic or dermatological adjuvants.

Referenced Cited
U.S. Patent Documents
4367239 January 4, 1983 Bregnedal et al.
4384140 May 17, 1983 Bregnedal et al.
5023335 June 11, 1991 Schumacher et al.
5760035 June 2, 1998 Rafferty et al.
Patent History
Patent number: 5962524
Type: Grant
Filed: Dec 18, 1998
Date of Patent: Oct 5, 1999
Assignee: Caster (Paris)
Inventor: Jean Fran.cedilla.ois Rodelet (Boulogne-Billancourt)
Primary Examiner: Keith D. MacMillan
Assistant Examiner: Vickie Kim
Law Firm: Jones, O'Keefe, Egan & Peterman, LLP
Application Number: 9/215,358
Classifications
Current U.S. Class: Compound Contains Two Or More C(=o)o Groups (514/547); Cosmetic, Facial (514/844)
International Classification: A01N 3702;